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<div class="textblock"><code>#include &quot;opencv2/opencv_modules.hpp&quot;</code><br />
<code>#include &quot;<a class="el" href="../../d0/d9c/core_2include_2opencv2_2core_8hpp.html">opencv2/core.hpp</a>&quot;</code><br />
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d0/d9e/structcv_1_1Accumulator.html">cv::Accumulator&lt; T &gt;</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d2d/structcv_1_1Accumulator_3_01char_01_4.html">cv::Accumulator&lt; char &gt;</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/dcf/structcv_1_1Accumulator_3_01short_01_4.html">cv::Accumulator&lt; short &gt;</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d6/d89/structcv_1_1Accumulator_3_01unsigned_01char_01_4.html">cv::Accumulator&lt; unsigned char &gt;</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d9/d84/structcv_1_1Accumulator_3_01unsigned_01short_01_4.html">cv::Accumulator&lt; unsigned short &gt;</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d0b/classcv_1_1AffineFeature.html">cv::AffineFeature</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Class for implementing the wrapper which makes detectors and extractors to be affine invariant, described as ASIFT in <a class="el" href="../../d0/de3/citelist.html#CITEREF_YM11">[286]</a> .  <a href="../../da/d0b/classcv_1_1AffineFeature.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d19/classcv_1_1AgastFeatureDetector.html">cv::AgastFeatureDetector</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Wrapping class for feature detection using the AGAST method. :  <a href="../../d7/d19/classcv_1_1AgastFeatureDetector.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/d30/classcv_1_1AKAZE.html">cv::AKAZE</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Class implementing the <a class="el" href="../../d8/d30/classcv_1_1AKAZE.html" title="Class implementing the AKAZE keypoint detector and descriptor extractor, described in ...">AKAZE</a> keypoint detector and descriptor extractor, described in <a class="el" href="../../d0/de3/citelist.html#CITEREF_ANB13">[9]</a>.  <a href="../../d8/d30/classcv_1_1AKAZE.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/da1/classcv_1_1BFMatcher.html">cv::BFMatcher</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Brute-force descriptor matcher.  <a href="../../d3/da1/classcv_1_1BFMatcher.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d2/d6b/classcv_1_1BOWImgDescriptorExtractor.html">cv::BOWImgDescriptorExtractor</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Class to compute an image descriptor using the <em>bag of visual words</em>.  <a href="../../d2/d6b/classcv_1_1BOWImgDescriptorExtractor.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d72/classcv_1_1BOWKMeansTrainer.html">cv::BOWKMeansTrainer</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">kmeans -based class to train visual vocabulary using the <em>bag of visual words</em> approach. :  <a href="../../d4/d72/classcv_1_1BOWKMeansTrainer.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d14/classcv_1_1BOWTrainer.html">cv::BOWTrainer</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Abstract base class for training the <em>bag of visual words</em> vocabulary from a set of descriptors.  <a href="../../d5/d14/classcv_1_1BOWTrainer.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../de/dbf/classcv_1_1BRISK.html">cv::BRISK</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Class implementing the <a class="el" href="../../de/dbf/classcv_1_1BRISK.html" title="Class implementing the BRISK keypoint detector and descriptor extractor, described in  ...">BRISK</a> keypoint detector and descriptor extractor, described in <a class="el" href="../../d0/de3/citelist.html#CITEREF_LCS11">[140]</a> .  <a href="../../de/dbf/classcv_1_1BRISK.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/dac/classcv_1_1DescriptorMatcher_1_1DescriptorCollection.html">cv::DescriptorMatcher::DescriptorCollection</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d39/classcv_1_1DescriptorMatcher.html">cv::DescriptorMatcher</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Abstract base class for matching keypoint descriptors.  <a href="../../db/d39/classcv_1_1DescriptorMatcher.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../df/d74/classcv_1_1FastFeatureDetector.html">cv::FastFeatureDetector</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Wrapping class for feature detection using the FAST method. :  <a href="../../df/d74/classcv_1_1FastFeatureDetector.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d0/d13/classcv_1_1Feature2D.html">cv::Feature2D</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Abstract base class for 2D image feature detectors and descriptor extractors.  <a href="../../d0/d13/classcv_1_1Feature2D.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../dc/de2/classcv_1_1FlannBasedMatcher.html">cv::FlannBasedMatcher</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Flann-based descriptor matcher.  <a href="../../dc/de2/classcv_1_1FlannBasedMatcher.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../df/d21/classcv_1_1GFTTDetector.html">cv::GFTTDetector</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Wrapping class for feature detection using the goodFeaturesToTrack function. :  <a href="../../df/d21/classcv_1_1GFTTDetector.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d61/classcv_1_1KAZE.html">cv::KAZE</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Class implementing the <a class="el" href="../../d3/d61/classcv_1_1KAZE.html" title="Class implementing the KAZE keypoint detector and descriptor extractor, described in  ...">KAZE</a> keypoint detector and descriptor extractor, described in <a class="el" href="../../d0/de3/citelist.html#CITEREF_ABD12">[10]</a> .  <a href="../../d3/d61/classcv_1_1KAZE.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../de/db2/classcv_1_1KeyPointsFilter.html">cv::KeyPointsFilter</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">A class filters a vector of keypoints.  <a href="../../de/db2/classcv_1_1KeyPointsFilter.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d7f/structcv_1_1L1.html">cv::L1&lt; T &gt;</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../dc/daa/structcv_1_1L2.html">cv::L2&lt; T &gt;</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d28/classcv_1_1MSER.html">cv::MSER</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Maximally stable extremal region extractor.  <a href="../../d3/d28/classcv_1_1MSER.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d95/classcv_1_1ORB.html">cv::ORB</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Class implementing the <a class="el" href="../../db/d95/classcv_1_1ORB.html" title="Class implementing the ORB (oriented BRIEF) keypoint detector and descriptor extractor. ">ORB</a> (<em>oriented BRIEF</em>) keypoint detector and descriptor extractor.  <a href="../../db/d95/classcv_1_1ORB.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/da7/structcv_1_1SimpleBlobDetector_1_1Params.html">cv::SimpleBlobDetector::Params</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d60/classcv_1_1SIFT.html">cv::SIFT</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Class for extracting keypoints and computing descriptors using the Scale Invariant Feature Transform (<a class="el" href="../../d7/d60/classcv_1_1SIFT.html" title="Class for extracting keypoints and computing descriptors using the Scale Invariant Feature Transform ...">SIFT</a>) algorithm by D. Lowe <a class="el" href="../../d0/de3/citelist.html#CITEREF_Lowe04">[154]</a> .  <a href="../../d7/d60/classcv_1_1SIFT.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d0/d7a/classcv_1_1SimpleBlobDetector.html">cv::SimpleBlobDetector</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Class for extracting blobs from an image. :  <a href="../../d0/d7a/classcv_1_1SimpleBlobDetector.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d46/structcv_1_1SL2.html">cv::SL2&lt; T &gt;</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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Namespaces</h2></td></tr>
<tr class="memitem:d2/d75/namespacecv"><td class="memItemLeft" align="right" valign="top"> &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d2/d75/namespacecv.html">cv</a></td></tr>
<tr class="memdesc:d2/d75/namespacecv"><td class="mdescLeft">&#160;</td><td class="mdescRight">"black box" representation of the file storage associated with a file on disk. <br /></td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:ga4f0293a04ea11fcea03746edd6781232"><td class="memItemLeft" align="right" valign="top">typedef AffineFeature&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d51/group__features2d__main.html#ga4f0293a04ea11fcea03746edd6781232">cv::AffineDescriptorExtractor</a></td></tr>
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<tr class="memitem:ga94d7dadbe8de971eeed19b8fd25e357e"><td class="memItemLeft" align="right" valign="top">typedef AffineFeature&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d51/group__features2d__main.html#ga94d7dadbe8de971eeed19b8fd25e357e">cv::AffineFeatureDetector</a></td></tr>
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<tr class="memitem:gadd5cf7c76865f14468cfdd9cc08eb990"><td class="memItemLeft" align="right" valign="top">typedef Feature2D&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#gadd5cf7c76865f14468cfdd9cc08eb990">cv::DescriptorExtractor</a></td></tr>
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<tr class="memitem:ga15e1361bda978d83a2bea629b32dfd3c"><td class="memItemLeft" align="right" valign="top">typedef Feature2D&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#ga15e1361bda978d83a2bea629b32dfd3c">cv::FeatureDetector</a></td></tr>
<tr class="separator:ga15e1361bda978d83a2bea629b32dfd3c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga89ce54823df44e7be4e43511c1d44553"><td class="memItemLeft" align="right" valign="top">typedef SIFT&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d51/group__features2d__main.html#ga89ce54823df44e7be4e43511c1d44553">cv::SiftDescriptorExtractor</a></td></tr>
<tr class="separator:ga89ce54823df44e7be4e43511c1d44553"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gab5eeb05ac493f07b9495f5571ca421c7"><td class="memItemLeft" align="right" valign="top">typedef SIFT&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d51/group__features2d__main.html#gab5eeb05ac493f07b9495f5571ca421c7">cv::SiftFeatureDetector</a></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr class="memitem:ga2c2ede79cd5141534ae70a3fd9f324c8"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d5d/group__features2d__draw.html#ga2c2ede79cd5141534ae70a3fd9f324c8">cv::DrawMatchesFlags</a> { <br />
&#160;&#160;<a class="el" href="../../d4/d5d/group__features2d__draw.html#gga2c2ede79cd5141534ae70a3fd9f324c8a5b39c8b553c821e7cddc6da64b5bd2ee">cv::DrawMatchesFlags::DEFAULT</a> = 0, 
<br />
&#160;&#160;<a class="el" href="../../d4/d5d/group__features2d__draw.html#gga2c2ede79cd5141534ae70a3fd9f324c8a32be7350ff5af15003fcaddf36653971">cv::DrawMatchesFlags::DRAW_OVER_OUTIMG</a> = 1, 
<br />
&#160;&#160;<a class="el" href="../../d4/d5d/group__features2d__draw.html#gga2c2ede79cd5141534ae70a3fd9f324c8a811ff9a659123ff7317ccd1269e59259">cv::DrawMatchesFlags::NOT_DRAW_SINGLE_POINTS</a> = 2, 
<br />
&#160;&#160;<a class="el" href="../../d4/d5d/group__features2d__draw.html#gga2c2ede79cd5141534ae70a3fd9f324c8ad640260b7dc8b32e0bf35c2696da24f8">cv::DrawMatchesFlags::DRAW_RICH_KEYPOINTS</a> = 4
<br />
 }</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:gaf7e1ba1ae884b59bd24338b741b0c4ac"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d51/group__features2d__main.html#gaf7e1ba1ae884b59bd24338b741b0c4ac">cv::AGAST</a> (InputArray image, std::vector&lt; KeyPoint &gt; &amp;keypoints, int threshold, bool nonmaxSuppression=true)</td></tr>
<tr class="separator:gaf7e1ba1ae884b59bd24338b741b0c4ac"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga8a4582d83ebcf097792457df0c1b32f7"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d51/group__features2d__main.html#ga8a4582d83ebcf097792457df0c1b32f7">cv::AGAST</a> (InputArray image, std::vector&lt; KeyPoint &gt; &amp;keypoints, int threshold, bool nonmaxSuppression, AgastFeatureDetector::DetectorType type)</td></tr>
<tr class="memdesc:ga8a4582d83ebcf097792457df0c1b32f7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Detects corners using the AGAST algorithm.  <a href="../../d5/d51/group__features2d__main.html#ga8a4582d83ebcf097792457df0c1b32f7">More...</a><br /></td></tr>
<tr class="separator:ga8a4582d83ebcf097792457df0c1b32f7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaa7cacd54220a6da4ee05748a0329b754"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#gaa7cacd54220a6da4ee05748a0329b754">cv::computeRecallPrecisionCurve</a> (const std::vector&lt; std::vector&lt; DMatch &gt; &gt; &amp;matches1to2, const std::vector&lt; std::vector&lt; <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> &gt; &gt; &amp;correctMatches1to2Mask, std::vector&lt; Point2f &gt; &amp;recallPrecisionCurve)</td></tr>
<tr class="separator:gaa7cacd54220a6da4ee05748a0329b754"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga5d2bafe8c1c45289bc3403a40fb88920"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d5d/group__features2d__draw.html#ga5d2bafe8c1c45289bc3403a40fb88920">cv::drawKeypoints</a> (InputArray image, const std::vector&lt; KeyPoint &gt; &amp;keypoints, InputOutputArray outImage, const Scalar &amp;color=Scalar::all(-1), DrawMatchesFlags flags=DrawMatchesFlags::DEFAULT)</td></tr>
<tr class="memdesc:ga5d2bafe8c1c45289bc3403a40fb88920"><td class="mdescLeft">&#160;</td><td class="mdescRight">Draws keypoints.  <a href="../../d4/d5d/group__features2d__draw.html#ga5d2bafe8c1c45289bc3403a40fb88920">More...</a><br /></td></tr>
<tr class="separator:ga5d2bafe8c1c45289bc3403a40fb88920"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gad8f463ccaf0dc6f61083abd8717c261a"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d5d/group__features2d__draw.html#gad8f463ccaf0dc6f61083abd8717c261a">cv::drawMatches</a> (InputArray img1, const std::vector&lt; KeyPoint &gt; &amp;keypoints1, InputArray img2, const std::vector&lt; KeyPoint &gt; &amp;keypoints2, const std::vector&lt; DMatch &gt; &amp;matches1to2, InputOutputArray outImg, const Scalar &amp;matchColor=Scalar::all(-1), const Scalar &amp;singlePointColor=Scalar::all(-1), const std::vector&lt; char &gt; &amp;matchesMask=std::vector&lt; char &gt;(), DrawMatchesFlags flags=DrawMatchesFlags::DEFAULT)</td></tr>
<tr class="memdesc:gad8f463ccaf0dc6f61083abd8717c261a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Draws the found matches of keypoints from two images.  <a href="../../d4/d5d/group__features2d__draw.html#gad8f463ccaf0dc6f61083abd8717c261a">More...</a><br /></td></tr>
<tr class="separator:gad8f463ccaf0dc6f61083abd8717c261a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga62fbedb5206ab2faf411797e7055c90f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d5d/group__features2d__draw.html#ga62fbedb5206ab2faf411797e7055c90f">cv::drawMatches</a> (InputArray img1, const std::vector&lt; KeyPoint &gt; &amp;keypoints1, InputArray img2, const std::vector&lt; KeyPoint &gt; &amp;keypoints2, const std::vector&lt; std::vector&lt; DMatch &gt; &gt; &amp;matches1to2, InputOutputArray outImg, const Scalar &amp;matchColor=Scalar::all(-1), const Scalar &amp;singlePointColor=Scalar::all(-1), const std::vector&lt; std::vector&lt; char &gt; &gt; &amp;matchesMask=std::vector&lt; std::vector&lt; char &gt; &gt;(), DrawMatchesFlags flags=DrawMatchesFlags::DEFAULT)</td></tr>
<tr class="separator:ga62fbedb5206ab2faf411797e7055c90f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gac78532caa0ee7744ab370c9a479ec397"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#gac78532caa0ee7744ab370c9a479ec397">cv::evaluateFeatureDetector</a> (const Mat &amp;img1, const Mat &amp;img2, const Mat &amp;H1to2, std::vector&lt; KeyPoint &gt; *keypoints1, std::vector&lt; KeyPoint &gt; *keypoints2, float &amp;repeatability, int &amp;correspCount, const Ptr&lt; FeatureDetector &gt; &amp;fdetector=Ptr&lt; FeatureDetector &gt;())</td></tr>
<tr class="separator:gac78532caa0ee7744ab370c9a479ec397"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga816d870cbdca71c6790c71bdf17df099"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d51/group__features2d__main.html#ga816d870cbdca71c6790c71bdf17df099">cv::FAST</a> (InputArray image, std::vector&lt; KeyPoint &gt; &amp;keypoints, int threshold, bool nonmaxSuppression=true)</td></tr>
<tr class="separator:ga816d870cbdca71c6790c71bdf17df099"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gac5d69c45d39e178336589c96133574d3"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d51/group__features2d__main.html#gac5d69c45d39e178336589c96133574d3">cv::FAST</a> (InputArray image, std::vector&lt; KeyPoint &gt; &amp;keypoints, int threshold, bool nonmaxSuppression, FastFeatureDetector::DetectorType type)</td></tr>
<tr class="memdesc:gac5d69c45d39e178336589c96133574d3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Detects corners using the FAST algorithm.  <a href="../../d5/d51/group__features2d__main.html#gac5d69c45d39e178336589c96133574d3">More...</a><br /></td></tr>
<tr class="separator:gac5d69c45d39e178336589c96133574d3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaa6bb3152a8df4830386b79517158bca1"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#gaa6bb3152a8df4830386b79517158bca1">cv::getNearestPoint</a> (const std::vector&lt; Point2f &gt; &amp;recallPrecisionCurve, float l_precision)</td></tr>
<tr class="separator:gaa6bb3152a8df4830386b79517158bca1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga79f47b975249c2f936804ea0c9a64518"><td class="memItemLeft" align="right" valign="top">float&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#ga79f47b975249c2f936804ea0c9a64518">cv::getRecall</a> (const std::vector&lt; Point2f &gt; &amp;recallPrecisionCurve, float l_precision)</td></tr>
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